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some more risky timing changes

Browse source 
But should be closer to the real thing.
Let's see what this will break...
This commit is contained in:
notaz 2017-10-02 23:38:12 +03:00
parent 8f80007bcc
commit e42a47e208
10 changed files with 129 additions and 81 deletions
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2
pico/cd/mcd.c
View file

@ -146,7 +146,7 @@ static void pcd_set_cycle_mult(void)
{
// ~1.63 for NTSC, ~1.645 for PAL
if (Pico.m.pal)
mcd_m68k_cycle_mult = ((12500000ull << 16) / (50*312*488));
mcd_m68k_cycle_mult = ((12500000ull << 16) / (50*313*488));
else
mcd_m68k_cycle_mult = ((12500000ull << 16) / (60*262*488)) + 1;
}

2
pico/debug.c
View file

@ -358,7 +358,7 @@ void PDebugZ80Frame(void)
return;
if (Pico.m.pal) {
lines = 312;
lines = 313;
line_sample = 68;
} else {
lines = 262;

7
pico/draw.c
View file

@ -1553,13 +1553,14 @@ void PicoDrawSync(int to, int blank_last_line)
pprof_start(draw);
if (rendlines != 240)
if (rendlines != 240) {
offs = 8;
if (to > 223)
to = 223;
}
for (line = Pico.est.DrawScanline; line < to; line++)
{
PicoLine(line, offs, sh, bgc);
}
// last line
if (line <= to)

1
pico/memory.c
View file

@ -539,7 +539,6 @@ static void PicoWrite8_z80(u32 a, u32 d)
}
if ((a & 0x4000) == 0x0000) { // z80 RAM
SekCyclesBurnRun(2); // FIXME hack
Pico.zram[a & 0x1fff] = (u8)d;
return;
}

30
pico/pico.c
View file

@ -22,7 +22,6 @@ int PicoAutoRgnOrder;
struct PicoSRAM SRam;
int emustatus; // rapid_ym2612, multi_ym_updates
int scanlines_total;
void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware
void (*PicoResetHook)(void) = NULL;
@ -227,29 +226,24 @@ void PicoLoopPrepare(void)
// force setting possibly changed..
Pico.m.pal = (PicoRegionOverride == 2 || PicoRegionOverride == 8) ? 1 : 0;
// FIXME: PAL has 313 scanlines..
scanlines_total = Pico.m.pal ? 312 : 262;
Pico.m.dirtyPal = 1;
rendstatus_old = -1;
}
// dma2vram settings are just hacks to unglitch Legend of Galahad (needs <= 104 to work)
// same for Outrunners (92-121, when active is set to 24)
// 96 is VR hack
// this table is wrong and should be removed
// keeping it for now to compensate wrong timing elswhere, mainly for Outrunners
static const int dma_timings[] = {
167, 167, 166, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy
102, 205, 204, 102, // vblank: 40cell:
16, 16, 15, 8, // active: 32cell:
24, 18, 17, 9 // ...
83, 166, 83, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy
102, 204, 102, 102, // vblank: 40cell:
8, 16, 8, 8, // active: 32cell:
17, 18, 9, 9 // ...
};
static const int dma_bsycles[] = {
(488<<8)/167, (488<<8)/167, (488<<8)/166, (488<<8)/83,
(488<<8)/102, (488<<8)/233, (488<<8)/204, (488<<8)/102,
(488<<8)/16, (488<<8)/16, (488<<8)/15, (488<<8)/8,
(488<<8)/24, (488<<8)/18, (488<<8)/17, (488<<8)/9
(488<<8)/83, (488<<8)/166, (488<<8)/83, (488<<8)/83,
(488<<8)/102, (488<<8)/204, (488<<8)/102, (488<<8)/102,
(488<<8)/8, (488<<8)/16, (488<<8)/8, (488<<8)/8,
(488<<8)/9, (488<<8)/18, (488<<8)/9, (488<<8)/9
};
// grossly inaccurate.. FIXME FIXXXMEE
@ -304,8 +298,8 @@ PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done)
pprof_start(z80);
elprintf(EL_BUSREQ, "z80 sync %i (%u|%u -> %u|%u)", cnt,
z80_cycle_cnt, z80_cycle_cnt / 288,
z80_cycle_aim, z80_cycle_aim / 288);
z80_cycle_cnt, z80_cycle_cnt / 228,
z80_cycle_aim, z80_cycle_aim / 228);
if (cnt > 0)
z80_cycle_cnt += z80_run(cnt);

2
pico/pico/pico.c
View file

@ -23,7 +23,7 @@ PICO_INTERNAL void PicoReratePico(void)
{
int rate = guessed_rates[PicoPicohw.r12 & 7];
if (Pico.m.pal)
fifo_bytes_line = (rate<<16)/50/312/2;
fifo_bytes_line = (rate<<16)/50/313/2;
else fifo_bytes_line = (rate<<16)/60/262/2;
PicoPicoPCMRerate(rate);
}

118
pico/pico_cmn.c
View file

@ -8,7 +8,6 @@
#define CYCLES_M68K_LINE 488 // suitable for both PAL/NTSC
#define CYCLES_M68K_VINT_LAG 68
#define CYCLES_M68K_ASD 148
// pad delay (for 6 button pads)
#define PAD_DELAY() { \
@ -53,13 +52,28 @@ static void SekSyncM68k(void)
static inline void SekRunM68k(int cyc)
{
SekCycleAim += cyc;
cyc = SekCycleAim - SekCycleCnt;
if (cyc <= 0)
return;
SekCycleCnt += cyc >> 6; // refresh slowdowns
SekSyncM68k();
}
static void do_hint(struct PicoVideo *pv)
{
pv->pending_ints |= 0x10;
if (pv->reg[0] & 0x10) {
elprintf(EL_INTS, "hint: @ %06x [%u]", SekPc, SekCyclesDone());
SekInterrupt(4);
}
}
static int PicoFrameHints(void)
{
struct PicoVideo *pv = &Pico.video;
int lines, y, lines_vis = 224, line_sample, skip, vcnt_wrap;
int line_sample = Pico.m.pal ? 68 : 93;
int lines, y, lines_vis, skip;
int vcnt_wrap, vcnt_adj;
unsigned int cycles;
int hint; // Hint counter
@ -77,25 +91,15 @@ static int PicoFrameHints(void)
}
else skip=PicoSkipFrame;
if (Pico.m.pal) {
line_sample = 68;
if (pv->reg[1]&8) lines_vis = 240;
} else {
line_sample = 93;
}
z80_resetCycles();
PsndStartFrame();
pv->status&=~0x88; // clear V-Int, come out of vblank
// Load H-Int counter
hint = (pv->status & PVS_ACTIVE) ? pv->hint_cnt : pv->reg[10];
hint=pv->reg[10]; // Load H-Int counter
//dprintf("-hint: %i", hint);
pv->status |= PVS_ACTIVE;
// This is to make active scan longer (needed for Double Dragon 2, mainly)
CPUS_RUN(CYCLES_M68K_ASD);
for (y = 0; y < lines_vis; y++)
for (y = 0; ; y++)
{
pv->v_counter = Pico.m.scanline = y;
if ((pv->reg[12]&6) == 6) { // interlace mode 2
@ -104,24 +108,23 @@ static int PicoFrameHints(void)
pv->v_counter &= 0xff;
}
if ((y == 224 && !(pv->reg[1] & 8)) || y == 240)
break;
// VDP FIFO
pv->lwrite_cnt -= 12;
if (pv->lwrite_cnt <= 0) {
pv->lwrite_cnt = 0;
Pico.video.status|=0x200;
Pico.video.status |= SR_EMPT;
}
PAD_DELAY();
// H-Interrupts:
if (--hint < 0) // y <= lines_vis: Comix Zone, Golden Axe
if (--hint < 0)
{
hint = pv->reg[10]; // Reload H-Int counter
pv->pending_ints|=0x10;
if (pv->reg[0]&0x10) {
elprintf(EL_INTS, "hint: @ %06x [%i]", SekPc, SekCyclesDone());
SekInterrupt(4);
}
do_hint(pv);
}
// decide if we draw this line
@ -163,6 +166,10 @@ static int PicoFrameHints(void)
pevt_log_m68k_o(EVT_NEXT_LINE);
}
lines_vis = (pv->reg[1] & 8) ? 240 : 224;
if (y == lines_vis)
pv->status &= ~PVS_ACTIVE;
if (!skip)
{
if (Pico.est.DrawScanline < y)
@ -172,28 +179,21 @@ static int PicoFrameHints(void)
#endif
}
// V-int line (224 or 240)
Pico.m.scanline = y;
pv->v_counter = 0xe0; // bad for 240 mode
if ((pv->reg[12]&6) == 6) pv->v_counter = 0xc1;
// VDP FIFO
pv->lwrite_cnt = 0;
Pico.video.status|=0x200;
Pico.video.status |= SR_EMPT;
memcpy(PicoPadInt, PicoPad, sizeof(PicoPadInt));
PAD_DELAY();
// Last H-Int:
// Last H-Int (normally):
if (--hint < 0)
{
hint = pv->reg[10]; // Reload H-Int counter
pv->pending_ints|=0x10;
//printf("rhint: %i @ %06x [%i|%i]\n", hint, SekPc, y, SekCyclesDone());
if (pv->reg[0]&0x10) SekInterrupt(4);
do_hint(pv);
}
pv->status|=0x08; // go into vblank
pv->status |= SR_VB; // go into vblank
pv->pending_ints |= 0x20;
// the following SekRun is there for several reasons:
@ -205,7 +205,7 @@ static int PicoFrameHints(void)
CPUS_RUN(CYCLES_M68K_VINT_LAG);
if (pv->reg[1] & 0x20) {
elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCyclesDone());
elprintf(EL_INTS, "vint: @ %06x [%u]", SekPc, SekCyclesDone());
SekInterrupt(6);
}
@ -230,25 +230,39 @@ static int PicoFrameHints(void)
PsndGetSamples(y);
// Run scanline:
CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG - CYCLES_M68K_ASD);
CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG);
if (PicoLineHook) PicoLineHook();
pevt_log_m68k_o(EVT_NEXT_LINE);
lines = scanlines_total;
vcnt_wrap = Pico.m.pal ? 0x103 : 0xEB; // based on Gens, TODO: verify
if (Pico.m.pal) {
lines = 313;
vcnt_wrap = 0x103;
vcnt_adj = 57;
}
else {
lines = 262;
vcnt_wrap = 0xEB;
vcnt_adj = 6;
}
for (y++; y < lines; y++)
for (y++; y < lines - 1; y++)
{
pv->v_counter = Pico.m.scanline = y;
if (y >= vcnt_wrap)
pv->v_counter -= Pico.m.pal ? 56 : 6;
pv->v_counter -= vcnt_adj;
if ((pv->reg[12]&6) == 6)
pv->v_counter = (pv->v_counter << 1) | 1;
pv->v_counter &= 0xff;
PAD_DELAY();
if ((pv->status & PVS_ACTIVE) && --hint < 0)
{
hint = pv->reg[10]; // Reload H-Int counter
do_hint(pv);
}
// Run scanline:
line_base_cycles = SekCyclesDone();
if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
@ -258,6 +272,28 @@ static int PicoFrameHints(void)
pevt_log_m68k_o(EVT_NEXT_LINE);
}
pv->status &= ~SR_VB;
// last scanline
Pico.m.scanline = y;
pv->v_counter = 0xff;
PAD_DELAY();
if ((pv->status & PVS_ACTIVE) && --hint < 0)
{
hint = pv->reg[10]; // Reload H-Int counter
do_hint(pv);
}
// Run scanline:
line_base_cycles = SekCyclesDone();
if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
CPUS_RUN(CYCLES_M68K_LINE);
if (PicoLineHook) PicoLineHook();
pevt_log_m68k_o(EVT_NEXT_LINE);
// sync cpus
cycles = SekCyclesDone();
if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
@ -276,6 +312,8 @@ static int PicoFrameHints(void)
#endif
timers_cycle();
pv->hint_cnt = hint;
return 0;
}

23
pico/pico_int.h
View file

@ -283,6 +283,7 @@ extern SH2 sh2s[2];
#define OSC_NTSC 53693100
#define OSC_PAL 53203424
// PicoVideo.debug_p
#define PVD_KILL_A (1 << 0)
#define PVD_KILL_B (1 << 1)
#define PVD_KILL_S_LO (1 << 2)
@ -292,6 +293,20 @@ extern SH2 sh2s[2];
#define PVD_FORCE_B (1 << 6)
#define PVD_FORCE_S (1 << 7)
// PicoVideo.status, not part of real SR
#define SR_PAL (1 << 0)
#define SR_DMA (1 << 1)
#define SR_HB (1 << 2)
#define SR_VB (1 << 3)
#define SR_ODD (1 << 4)
#define SR_C (1 << 5)
#define SR_SOVR (1 << 6)
#define SR_F (1 << 7)
#define SR_FULL (1 << 8)
#define SR_EMPT (1 << 9)
// not part of real SR
#define PVS_ACTIVE (1 << 16)
struct PicoVideo
{
unsigned char reg[0x20];
@ -299,14 +314,15 @@ struct PicoVideo
unsigned char pending; // 1 if waiting for second half of 32-bit command
unsigned char type; // Command type (v/c/vsram read/write)
unsigned short addr; // Read/Write address
int status; // Status bits
unsigned int status; // Status bits (SR) and extra flags
unsigned char pending_ints; // pending interrupts: ??VH????
signed char lwrite_cnt; // VDP write count during active display line
unsigned short v_counter; // V-counter
unsigned short debug; // raw debug register
unsigned char debug_p; // ... parsed: PVD_*
unsigned char addr_u;
unsigned char pad[0x0c];
unsigned char addr_u; // bit16 of .addr
unsigned char hint_cnt;
unsigned char pad[0x0b];
};
struct PicoMisc
@ -684,7 +700,6 @@ extern struct Pico Pico;
extern struct PicoSRAM SRam;
extern int PicoPadInt[2];
extern int emustatus;
extern int scanlines_total;
extern void (*PicoResetHook)(void);
extern void (*PicoLineHook)(void);
PICO_INTERNAL int CheckDMA(void);

10
pico/sound/sound.c
View file

@ -44,7 +44,7 @@ extern int *sn76496_regs;
static void dac_recalculate(void)
{
int i, dac_cnt, pos, len, lines = Pico.m.pal ? 312 : 262, mid = Pico.m.pal ? 68 : 93;
int i, dac_cnt, pos, len, lines = Pico.m.pal ? 313 : 262, mid = Pico.m.pal ? 68 : 93;
if (PsndLen <= lines)
{
@ -169,8 +169,8 @@ PICO_INTERNAL void PsndDoDAC(int line_to)
int dout = ym2612.dacout;
int line_from = PsndDacLine;
if (line_to >= 312)
line_to = 311;
if (line_to >= 313)
line_to = 312;
pos = dac_info[line_from];
pos1 = dac_info[line_to + 1];
@ -198,8 +198,8 @@ PICO_INTERNAL void PsndDoPSG(int line_to)
int pos, pos1, len;
int stereo = 0;
if (line_to >= 312)
line_to = 311;
if (line_to >= 313)
line_to = 312;
pos = dac_info[line_from];
pos1 = dac_info[line_to + 1];

1
pico/state.c
View file

@ -687,6 +687,7 @@ static int pico_state_internal(void *afile, int is_save)
}
Pico.m.dirtyPal = 1;
Pico.video.status &= ~(SR_VB | SR_F);
}
return ret;